128" BIG BORE KIT FOR M-EIGHT 114" AND 117" ENGINES

The Big Bore kit yields excellent results with stock cylinder heads. Bolt-on kit, the largest cylinder bore possible without requiring machining of the crankcases.

Easy installation: no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
Cylinders are constructed from premium aluminum castings with cast-in iron liners, and feature black granite finish with highlighted cylinder fins

Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)

Made in the U.S.A.


This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.

BASE COLOR BLACK
COLOR/FINISH HIGHLIGHTED FINS / BLACK GRANITE

BORE SIZE 4.250"
DISPLACEMENT 128"
STROKE LENGTH 4-1/2"
COMPRESSION RATIO 11.0:1